Finding the Fourth Proportional to 1,527.90, 2,108.53 and 938.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,527.90 : 2,108.53 = 938.22 : x
2. Step 2: Convert to fraction form
   1,527.90/2,108.53 = 938.22/x
3. Step 3: Cross multiply
   1,527.90x = 2,108.53 × 938.22
4. Step 4: Simplify right side
   1,527.90x = 1,978,265.02
5. Step 5: Solve for x
   x = 1,978,265.02/1,527.90
6. Step 6: Final answer
   x = 1,294.76